Portable band saw



FIG. 1 is a left front perspective view of a portable band saw showing my new design.

FIG. 2 is a Left side view thereof.

FIG. 3 is a right side view thereof.

FIG. 4 is a front view thereof.

FIG. 5 is a rear view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

The ornamental design for a portable band saw, as shown and described. 